README.md

In areyesq89/HumanTissuesDEU: Analysis of tissue-dependent exon usage in humans

HumanDEU

This repository contains the code and pre-computed data objects to reproduce each figure, statistic and tables from the paper:

• A Reyes and W Huber. Alternative start and termination sites of transcription drive most transcript isoform differences across human tissues. Nucleic Acids Research, 2017. doi: 10.1093/nar/gkx1165

The code is organized as an R package containing 6 different vignettes that reproduce different aspects of the manuscript:

• Vignette 01_precomputedObjects.Rmd contains the code used to generate the pre-computed objects provided in this package. (html)
• Vignette 02_figure1Analysis.Rmd contains analyses and code related to Figure 1. (html)
• Vignette 03_figure2Analysis.Rmd contains analyses and code related to Figure 2. (html)
• Vignette 04_figure3Analysis.Rmd contains analyses and code related to Figure 3. (html)
• Vignette 05_figure4Analysis.Rmd contains analyses and code related to Figure 4. (html)
• Vignette 06_figure5Analysis.Rmd contains analyses and code related to Figure 5. (html)
• Vignette 99_revisions.Rmd contains plots that were generated to convince reviewers to accept our paper. (html)

Since Github repositories have size limits, the R data objects of this package were deposited in zenodo. In order to reproduce the results of the manuscript, you will have to build the R package by following the next steps in a terminal:

1. Clone this repository:

git clone https://github.com/areyesq89/HumanTissuesDEU.git

2. Download R objects from zenodo placing them in their corresponding data directories inside the package:

for i in `cat HumanTissuesDEU/inst/files/Robjects.txt`
do
curl -o HumanTissuesDEU/data/$i https://zenodo.org/record/2583270/files/$i
done

for i in `cat HumanTissuesDEU/inst/files/extdata.txt`
do
curl -o HumanTissuesDEU/inst/extdata/$i https://zenodo.org/record/2583270/files/$i
done

3. Make sure that the files were downloaded correctly by comparing the md5sum results. You could do this in R by doing:

uploaded <- read.table("HumanTissuesDEU/inst/files/md5sum.check")
colnames(uploaded) <- c("md5up", "file")
files <- list.files("HumanTissuesDEU", pattern="(RData|sqlite)$", full.names=TRUE, recursive=TRUE)
downloaded <- tools::md5sum(files)
names(downloaded) <- basename(names( downloaded ))
downloaded <- data.frame( md5down=downloaded, file=names(downloaded) )
isOK <- all( with( merge( downloaded, uploaded ), md5down == md5up ) )
if( !isOK ){ 
   stop("Files were not downloaded correctly, please try again!") 
} else { 
   message("Files downloaded succesfully")
}

3. Install the packages needed to reproduce the code. You could do this in R by doing:

needed <- desc::desc_get_deps("HumanTissuesDEU/DESCRIPTION")$package
needed <- needed[!needed %in% rownames( installed.packages() )]
if( length(needed) > 0 ){
    BiocManager::install( needed )
}

4. Build and install the package:

R CMD build --no-resave-data HumanTissuesDEU
R CMD INSTALL HumanDEU_0.0.99.tar.gz

If the build of the package was successful, the vignettes of the paper were compiled and the paper was reproduced! Now, you should also be able to go through each vignette and reproduce the paper. If you run into problems, please send me an e-mail and I will try to respond shortly.

Note: The code to plot the sashimi plots of this manuscript manuscript is available though this Github repository. These functions input bam files and, unfortunately, we are unable to provide these bam files since they contain potentially identifiable data. If you have access to the GTEX alignment data, the functions are expecting the bam files to have the format /path/to/directory/alignments/<SRRID>/<SRRID>_Aligned.sortedByCoord.out.bam. If you define an environent variable export gtex=/path/to/directory, the vignette will try to find the files and reproduce the sashimi plots.

Note 2: You will need a relatively big machine (>60Gb of RAM) to reproduce the analysis.

areyesq89/HumanTissuesDEU documentation built on May 6, 2019, 9:51 a.m.